JP7370168B2 - cap - Google Patents

Description

The present invention relates to a cap.

For example, Patent Document 1 below includes a cap body that has a fitting inner cylinder and a fitting outer cylinder that have a plug removal part with a pull ring, and a lid body that is integrally formed with the cap body via a hinge. The cap is exposed.

Utility Model Publication No. 6-61747

In contrast to the cap disclosed in Patent Document 1, a so-called plug-less cap, which is a cap in which a plug-free portion is not formed, is conventionally known. Furthermore, caps have been known that include a pouring tube that projects upward from the top wall of the cap body. Caps equipped with a spouting tube are provided with a taller spouting tube for the purpose of making it easier to pour out the contents and suppressing the adhesion of the contents to the top wall. .

However, in this type of cap that does not have a plug, the dispensing tube rises due to the deformation of the fitting tube that is press-fitted into the container mouth when the cap is attached to the container body, compared to a cap that has a plug-release part. Cheap. At this time, there is no problem with a cap with a low spouting barrel, but in the case of a cap with a high spouting barrel, the spouting barrel may rise to a position where it pushes up the lid. As a result, there was a problem that the lid easily came off due to impact or the like.

One aspect of the present invention has been made in order to solve the above-mentioned problems, and one of the objects is to provide a cap in which there is little risk that the spouting tube will rise during capping.

In order to achieve the above object, a cap according to one aspect of the present invention includes a cap body that is attached to the mouth of a container body, and a capped cylindrical lid body that opens and closes the upper surface of the cap body. The cap body includes a spout tube having a spout hole for the contents of the container body inside, a top wall portion on which the spout tube is formed, and a lower surface of an outer periphery of the top wall portion hanging down. a fitting cylinder part that is vertically provided on the lower surface of the ceiling wall part on the radially inner side of the outer peripheral wall part and that fits into the mouth part over the entire circumference; a groove portion formed by a wall portion continuous with the top wall portion and the fitting tube portion on the radially inner side and recessed downward; the groove portion is formed by press-fitting the fitting tube portion into the mouth portion It is formed so that it can be deformed as it deforms in a direction in which the diameter is reduced inward.

According to the cap of one aspect of the present invention, the cap body has a groove portion formed by a wall portion continuous with the top wall portion and the fitting tube portion on the radially inner side of the fitting tube portion. Even if the fitting cylindrical portion is press-fitted into the mouth of the container body and deforms when the cap is plugged, the deformation is absorbed by the deformation of the groove. Thereby, the influence of the deformation of the fitting cylinder part is less likely to be transmitted to the part of the top wall part inside the groove part, and it is possible to suppress the rising of the pouring cylinder.

In one aspect of the cap of the present invention, the wall portion has an inner circumferential tube portion provided on the radially inner side of the fitting tube portion, and the lower end of the inner circumferential tube portion and the fitting tube portion are connected to each other. The groove portion may be formed by integrally connecting the lower end with the lower end.

According to this configuration, since the groove is formed by the inner peripheral cylinder part and the fitting cylinder part, there is no need to provide a wall part separately from the fitting cylinder part, and the structure of the cap main body can be simplified. In addition, since a part of the groove is formed by the fitting cylinder, deformation of the fitting cylinder is directly absorbed by the groove, and upward movement of the pouring cylinder is effectively suppressed.

In the cap according to one aspect of the present invention, the spouting tube may be provided at a position eccentric from the center of the top wall portion when viewed from above.

When the spouting tube is installed at a position eccentric from the center of the top wall when viewed from above, the fitting tube section becomes more The spouting tube becomes easier to rise as it deforms. Even in that case, according to the above configuration, it is possible to effectively suppress the rise of the spout tube.

In one aspect of the cap of the present invention, the top wall portion may have an inclined wall portion that slopes upward from an outer peripheral side of the top wall portion toward the pouring tube.

According to this configuration, even if the upper end of the spouting tube is placed at a high position, the top wall of the spouting tube protrudes above the top wall compared to a case where the top wall does not have an inclined wall. It is possible to shorten the dimensions of the part. Thereby, the spouting tube is stably supported by the top wall, and the possibility of damage to the spouting tube can be reduced.

According to one aspect of the present invention, it is possible to provide a cap in which there is little risk that the spouting tube will rise during capping.

It is a top view of the cap of one embodiment of the present invention. It is a longitudinal cross-sectional view of the cap when the lid is closed.

Hereinafter, one embodiment of the present invention will be described using FIGS. 1 and 2.
As shown in FIG. 1, the cap 1 of this embodiment includes a cylindrical cap body 11 that is attached to the mouth W1 of the container body W, and a capped cylindrical lid body 12 that opens and closes the top surface of the cap body 11. and a hinge portion 13 that connects the cap body 11 and the lid body 12. The cap 1 is a so-called plug-less cap, which does not have a removable plug portion that closes a pouring hole, which will be described later.

The container body W has a cylindrical opening W1 provided, for example, at the upper end of the body. The container body W is made of an elastic synthetic resin such as polyethylene or polypropylene, and has flexibility that allows squeeze deformation and restoration displacement.

The cap body 11 and the lid body 12 are arranged coaxially with a common axis. Hereinafter, this common axis will be referred to as a cap axis O, the direction along the cap axis O, the side of the top wall portion 16 (described later) of the cap body 11 will be referred to as the upper side, and the side of the outer peripheral wall portion 17 (described later) of the cap body 11 will be referred to as the upper side. The open end side is called the lower side. When viewed from the direction along the cap axis O (vertical direction), the direction intersecting the cap axis O is called the radial direction, and the direction going around the cap axis O is called the circumferential direction.

As shown in FIG. 2, the cap main body 11 includes a pouring tube 15, a top wall portion 16, an outer peripheral wall portion 17, a fitting cylinder portion 18, and a groove portion 19.

The spout tube 15 has a spout hole 21 for dispensing the contents of the container body W therein, and is formed integrally with the top wall portion 16 . The pouring cylinder 15 has an upper end placed at a position higher than the upper surface of the ceiling wall part 16 and a lower end placed at a position lower than the lower surface of the ceiling wall part 16. As described above, the spouting tube 15 is formed to pass through the top wall portion 16, so that the spout hole 21 penetrates the top wall portion 16 in the vertical direction. The upper end of the pouring tube 15 is shaped to open outward, making it easier to pour out the contents smoothly.

The lower part of the pouring cylinder 15 has a tapered shape whose diameter decreases from above to below. A valve 23 is formed at the lower end of the pouring cylinder 15. The valve 23 of this embodiment is configured as a one-point valve in which a part of the valve body 24 is connected to the lower end of the spout cylinder 15 at one point. A rectifying wall portion 25 that projects toward the inside of the spouting hole 21 is formed on the inner peripheral surface of the spouting cylinder 15 at a position above the valve 23 and below a sealing cylinder to be described later. The distal end side of the flow regulating wall portion 25 is inclined upward. The flow regulating wall portion 25 may be continuously formed in an annular shape in the circumferential direction on the inner circumferential surface of the pouring tube 15, or may be interrupted at one or more circumferential points.

When pouring out contents from a container equipped with the cap 1 of this embodiment, the user opens the lid 12, tilts the container, and squeezes the body of the container body W. At this time, due to the increase in the internal pressure of the container body W and the weight of the contents, the valve body 24 swings and the cross-sectional area of the flow path increases, causing the contents to flow into the gap between the lower end of the spout tube 15 and the valve body 24. flows out through the In this way, since the valve body 24 partially closes the spout hole 21, the flow resistance increases, and even if the content is of low viscosity, the force of the content flowing out can be suppressed. Therefore, the contents are prevented from scattering over a wide angle from the dispensing tube 15, and the contents can be dispensed in a rectified state.

However, when the valve 23 consisting of a single point valve is used, the width of the gap between the lower end of the spout tube 15 and the valve body 24 varies depending on the position in the circumferential direction, so that the flow rate of the contents tends to be uneven. In this regard, in the case of this embodiment, since the rectifying wall part 25 that protrudes inward is formed on the inner circumferential surface of the spouting tube 15, the contents are stirred in the circumferential direction by the rectifying wall part 25 and the flow rate is becomes uniform, making it easier to pour out the contents in a rectified state.

As shown in FIG. 1, the pouring tube 15 is formed at a position eccentric from the center of the top wall portion 16 when viewed from above. Specifically, the pouring tube 15 is formed at a position shifted to the opposite side of the hinge portion 13 that radially sandwiches the cap axis O in a top view. Thereby, when the user pours the contents into another container, it is easy for the user to bring the pouring cylinder 15 close to the outer periphery of the other container, and it is easy to pour the contents without spilling them. Furthermore, in order to make it easier to pour the contents, the upper end of the dispensing cylinder 15 on the side opposite to the hinge part 13 is formed higher than the upper end on the side of the hinge part 13, as shown in FIG.

As shown in FIG. 2, the top wall portion 16 has an inclined wall portion 27 that slopes upward from the outer peripheral side of the top wall portion 16 toward the pouring tube 15. The inclined wall portion 27 is formed to surround the spout tube 15 in an annular shape. When the angle θ between the top surface of the ceiling wall portion 16 and the inclined surface of the inclined wall portion 27 is the angle of the inclined wall portion 27, the angle θ of the inclined wall portion 27 may be, for example, about 45° to 80°. Desirably, the angle is 60°, for example. By setting the angle θ of the inclined wall portion 27 within the above range, vertical rigidity can be ensured, and changes in the position of the pouring tube 15 after the cap 1 is attached to the container body W can be suppressed to a small level. .

The outer peripheral wall portion 17 is vertically provided on the lower surface of the outer peripheral edge of the ceiling wall portion 16. A fitting convex portion 17a is provided at the lower end of the outer peripheral wall portion 17 to fit undercut into the opening portion W1 of the container body W.

The fitting cylinder portion 18 is provided vertically on the lower surface of the top wall portion 16 on the radially inner side of the outer circumferential wall portion 17 . When the cap 1 is not attached to the container body W, the fitting cylinder portion 18 has an outer diameter slightly larger than the inner diameter of the mouth portion W1. When the cap 1 is attached to the container body W, the cap 1 is fixed to the container body W with the fitting cylinder portion 18 press-fitted inside the mouth portion W1.

A groove 19 is formed in the top wall 16 on the inside of the fitting cylinder 18 in the radial direction, and is formed by a wall continuous with the top wall 16 and the fitting cylinder 18, and is recessed downward. In the case of the present embodiment, an inner circumferential cylinder part 29 is formed as the wall part on the radially inner side of the fitting cylinder part 18, with a part of the outer peripheral side of the top wall part 16 hanging downward; The lower end of the inner circumferential cylinder part 29 and the lower end of the fitting cylinder part 18 are integrally connected to form the groove part 19. As a result, the inner circumferential cylinder part 29 and the fitting cylinder part 18 face each other, and a groove part 19 having a U-shape in cross section is formed. In this embodiment, each of the inner cylindrical portion 29 and the fitting cylindrical portion 18 is bent approximately perpendicularly to the top wall 16, and the surfaces of the inner cylindrical portion 29 and the fitting cylindrical portion 18 facing each other are They are arranged approximately parallel to each other. Further, the position of the lower end of the groove portion 19 is approximately the same as the position of the lower end of the pouring tube 15.

In addition, each of the inner circumferential cylinder part 29 and the fitting cylinder part 18 is bent at an angle inclined from perpendicular to the top wall part 16, and the mutually opposing surfaces of the inner circumferential cylinder part 29 and the fitting cylinder part 18 are bent. They may form an angle other than parallel. In other words, the groove portion 19 may have a V-shape in cross-section, for example. Further, the number of grooves 19 is not necessarily one, and a plurality of grooves may be formed in the radial direction. Further, the depth of the groove portion 19 is not particularly limited, but it is desirable to have a certain depth in order to effectively absorb the deformation of the fitting cylinder portion 18.

An annular lid engaging portion 31 is formed on the upper surface of the top wall portion 16 at a position outside the groove portion 19 and inside the outer peripheral wall portion 17 . The lid engaging portion 31 has a fitting convex portion 31a that protrudes upward from the outer peripheral edge of the upper surface of the top wall portion 16 and fits into the fitting recess 34b of the lid 12 when the lid 12 is closed. Note that the lid engaging portion 31 may be formed on the outer peripheral wall portion 17 instead of the top wall portion 16.

The lid body 12 is connected to the outer circumferential wall portion 17 of the cap body 11 via a hinge portion 13. The lid body 12, the cap body 11, and the hinge portion 13 are integrally formed. The lid body 12 includes a top wall portion 33 , a peripheral wall portion 34 , an operating protrusion 35 , a seal body 36 , and a valve holding portion 37 .

At the lower end of the peripheral wall portion 34 of the lid body 12, an operating protrusion 35 that protrudes radially outward is formed at a portion located on the opposite side of the hinge portion 13 that radially sandwiches the cap shaft O.

The peripheral wall portion 34 of the lid body 12 is removably fitted onto the lid engaging portion 31 of the cap body 11 . A fitting recess 34b that fits into the fitting convex portion 31a of the lid engaging portion 31 is formed on the inner circumferential surface of the peripheral wall portion 34. The peripheral wall portion 34 continuously contacts the upper opening edge of the lid engaging portion 31 over the entire circumferential area. By fitting the lid 12 into the lid engaging portion 31, a releasably sealed space S is formed between the lid 12 and the upper surface of the ceiling wall portion 16.

The seal body 36 is removably fitted into the spout hole 21 . The seal body 36 releasably seals the spout hole 21 by having its outer peripheral surface abut against the inner peripheral surface of the spout tube 15 . The seal body 36 extends downward from the top wall portion 33 of the lid body 12 and is formed integrally with the top wall portion 33 . The seal body 36 is formed in a cylindrical shape and is disposed coaxially with the cap axis O. A lower end portion of the seal body 36 is located above the flow regulating wall portion 25 on the inner circumferential surface of the spouting tube 15 . Note that the seal body 36 may be formed separately from the lid body 12. The seal body 36 is not limited to a cylindrical shape, and may be, for example, a solid rod shape or a block shape.

The valve holding portion 37 is formed coaxially with the seal body 36 on the lower surface of the top wall portion 33 of the lid body 12, and extends downward from the top wall portion 33. The lower end of the valve holding portion 37 is located below the lower end of the seal body 36 and above the valve body 24 of the cap body 11. The valve holding portion 37 comes into contact with the valve body 24 when the valve body 24 swings beyond a predetermined opening degree, and regulates the swing range (opening degree) of the valve body 24 .

Out of the fitting cylinder part 18 of the cap body 11, the outside of the fitting cylinder part 18 located on the side of the hinge part 13 communicates with the space S between the lid body 12 and the top wall part 16 of the cap body 11. A leak test hole 39 is formed to make the inside of the space S positive or negative pressure during a leak test.

In this embodiment, a notch 41 is formed by cutting out a part of the lid engaging part 31 located on the side of the hinge part 13, and a notch 41 is formed inside the notch 41 and protrudes from the upper part of the fitting cylinder part 18. An inner wall 42 is formed. Thereby, the leak test hole 39 is formed between the notch 41 and the inner wall 42 when the lid is closed.

If the cutout portion 41 is formed beyond the formation range of the hinge portion 13 in the circumferential direction of the cap body 11, shower water in the cleaning process will easily enter, so as shown in FIG. It is desirable to form within the formation range of . Further, as shown in FIG. 2, the inner wall 42 is formed to have a height equal to or slightly higher than the height of the lid engaging portion 31, and as shown in FIG. The leak test hole 39 is formed so that its length is slightly longer than the length of the notch 41, and the end of the inner wall 42 and the end of the lid engaging part 31 overlap. This is desirable. This makes it possible to further suppress the intrusion of shower water. In addition, in this embodiment, the notch part 41 and the inner wall 42 are each formed in one place, but for example, the notch part 41 may be formed in a plurality of places with respect to the inner wall 42 in one place, and The same number of inner walls 42 may be formed according to the number of notches 41.

In conventional caps, the fitting cylinder part is press-fitted into the mouth of the container during capping, and the fitting cylinder part deforms in a direction in which it contracts inward in the radial direction, and the spouting cylinder rises accordingly. This phenomenon also occurred with caps that have a stopper, but in the case of a cap without a stopper, since there is no stopper, there is a wall that resists the stress exerted on the spout barrel from the peripheral edge of the top wall. Because of the small amount, there was a problem in that the spouting tube was more likely to rise. Moreover, in the case of a cap with a high spouting barrel and a narrow distance between the spouting barrel and the lid, the spouting barrel may rise to a position where it pushes up the lid. As a result, problems such as the lid coming off due to impact etc. have occurred.

To solve this problem, according to the cap 1 of the present embodiment, on the radially inner side of the fitting cylinder part 18, the inner circumferential cylinder part 29 integrally formed with the top wall part 16 and the fitting cylinder part 18 are arranged in a downward direction. Since the recessed groove 19 is formed, even if the fitting tube 18 is press-fitted into the mouth W1 of the container body W and deforms inwardly in the direction of diameter reduction during capping, the deformation will not occur in the groove 19. Absorbed by elastic deformation. As a result, the influence of the deformation of the fitting cylinder part 18 is less likely to be transmitted to the portion of the top wall part 16 inside the groove part 19, and the rise of the pouring cylinder 15 can be suppressed. Therefore, even if the cap 1 has a narrow distance between the lower surface of the top wall 33 of the lid 12 and the upper end of the spout tube 15, for example, about 0.2 to 0.5 mm, the lid 12 may come off due to impact or the like. It is possible to suppress problems such as the following.

Further, according to the present embodiment, since the groove portion 19 is formed by the inner circumferential tube portion 29 and the fitting tube portion 18, there is no need to provide two additional tube portions inside the fitting tube portion 18, and the cap The configuration of the main body 11 can be simplified. Moreover, since a part of the groove 19 is formed by the fitting cylinder part 18, the deformation of the fitting cylinder part 18 is directly absorbed by the groove part 19, and the rise of the pouring cylinder 15 is effectively suppressed.

As in this embodiment, when the pouring tube 15 is formed at a position eccentric from the center of the top wall portion 16 (cap axis O) when viewed from above, the pouring tube 15 is formed on the cap axis O. Unlike the case where the dispensing cylinder 15 and the fitting cylinder part 18 are short on one side in the radial direction of the top wall part 16, specifically, on the side opposite to the hinge part 13, long.

In this way, by creating a portion where the distance between the spout tube 15 and the fitting tube portion 18 is shortened, the influence of the deformation of the fitting tube portion 18 is easily transmitted to the pour tube 15, and the spout tube 15 is It becomes easier to rise. Furthermore, since the distance between the pouring cylinder 15 and the fitting cylinder part 18 differs depending on the position in the circumferential direction, the degree of influence of deformation of the fitting cylinder part 18 also differs depending on the position in the circumferential direction. There was also a risk that the cylinder 15 would rise in the inclined direction. On the other hand, according to the cap 1 of this embodiment, the rise of the spout tube 15 can be effectively suppressed.

Further, in the cap 1 of the present embodiment, since the top wall portion 16 has an inclined wall portion 27 that is inclined upward from the outer peripheral side of the top wall portion 16 toward the spouting tube 15, Even if the top end is designed to be placed at a high position, the portion of the pouring tube 15 that protrudes above the top wall portion 16 is larger than that in the case where the top wall portion 16 does not have the inclined wall portion 27. The dimensions of can be shortened. Thereby, the pouring tube 15 is stably supported by the top wall portion 16, and the possibility of damage to the pouring tube 15 can be reduced.

Note that the technical scope of the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the inner circumferential cylinder part 29 is formed continuously from the lower end of the fitting cylinder part 18, and the groove part 19 is formed by the fitting cylinder part 18 and the inner circumferential cylinder part 29. . Instead of this form, two cylindrical parts whose lower ends are connected to each other are formed on the radially inner side of the cylindrical fitting part 18, separately from the cylindrical fitting part 18, and a groove part is formed by these cylindrical parts. Good too. In any case, if the groove part 19 is formed in the top wall part 16 at a position between the fitting cylinder part 18 and the pouring cylinder 15, the same effects as in the above embodiment can be obtained.

In the embodiment described above, the pouring tube 15 is formed at a position eccentric from the center of the top wall portion 16, but may be provided at the center of the top wall portion 16. Further, in the above embodiment, the top wall portion 16 has the sloped wall portion 27 that slopes upward from the outer circumferential side of the top wall portion 16 toward the pouring tube 15, but it does not necessarily have the sloped wall portion 27. You don't have to.

Further, in the above embodiment, an example of a hinged cap is shown in which the lid body 12 is connected to the cap body 11 via the hinge part 13; Alternatively, a configuration may be adopted in which the lid 12 is removably fitted into the cap body 11, or a configuration in which the lid 12 is removably screwed onto the cap body 11.

In addition, it is possible to appropriately replace the components in the above embodiments with well-known components without departing from the spirit of the present invention.

1 Cap 11 Cap body 12 Lid 15 Pour tube 16 Top wall 17 Outer wall 18 Fitting tube 19 Groove 27 Slanted wall 29 Inner tube (wall)
W Container body W1 Mouth part

Claims (4)

a cap body attached to the mouth of the container body;
a capped cylindrical lid body that opens and closes the top surface of the cap body;
Equipped with
The cap body is
a spout cylinder having a spout hole for the contents of the container body inside;
a top wall portion in which the pouring tube is formed;
an outer peripheral wall part perpendicularly provided on the lower surface of the outer peripheral edge of the ceiling wall part;
a fitting cylinder part that is vertically installed on the lower surface of the ceiling wall part on the radially inner side of the outer circumferential wall part and that fits into the mouth part over the entire circumference ;
a groove portion recessed downward and formed by a wall portion continuous with the top wall portion and the fitting tube portion on the radially inner side of the fitting tube portion;
has
In the cap, the groove portion is formed to be deformable as the fitting cylinder portion is press-fitted into the mouth portion and deforms in a direction in which the diameter is reduced inward. The wall portion has an inner circumferential cylinder portion provided on the radially inner side of the fitting cylinder portion,
The cap according to claim 1, wherein the groove is formed by integrally connecting a lower end of the inner circumferential cylinder and a lower end of the fitting cylinder. The cap according to claim 1 or 2, wherein the spouting tube is provided at a position eccentric from the center of the ceiling wall portion when viewed from above. The cap according to any one of claims 1 to 3, wherein the top wall portion has an inclined wall portion that slopes upward from the outer peripheral side of the top wall portion toward the pouring tube.

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